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 <20210117151053.24600-7-songmuchun@bytedance.com> <88a384ba-8487-c66b-e7b-eb6055e3775@google.com>
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From:   Muchun Song <songmuchun@bytedance.com>
Date:   Mon, 25 Jan 2021 13:06:44 +0800
Message-ID: <CAMZfGtW5S42rPtOJexNv+Zf2S-J0kG8T1KpWS_ozQb2eG-YH0A@mail.gmail.com>
Subject: Re: [External] Re: [PATCH v13 06/12] mm: hugetlb: set the
 PageHWPoison to the raw error page
To:     David Rientjes <rientjes@google.com>
Cc:     Jonathan Corbet <corbet@lwn.net>,
        Mike Kravetz <mike.kravetz@oracle.com>,
        Thomas Gleixner <tglx@linutronix.de>, mingo@redhat.com,
        bp@alien8.de, x86@kernel.org, hpa@zytor.com,
        dave.hansen@linux.intel.com, luto@kernel.org,
        Peter Zijlstra <peterz@infradead.org>, viro@zeniv.linux.org.uk,
        Andrew Morton <akpm@linux-foundation.org>, paulmck@kernel.org,
        mchehab+huawei@kernel.org, pawan.kumar.gupta@linux.intel.com,
        Randy Dunlap <rdunlap@infradead.org>, oneukum@suse.com,
        anshuman.khandual@arm.com, jroedel@suse.de,
        Mina Almasry <almasrymina@google.com>,
        Matthew Wilcox <willy@infradead.org>,
        Oscar Salvador <osalvador@suse.de>,
        Michal Hocko <mhocko@suse.com>,
        "Song Bao Hua (Barry Song)" <song.bao.hua@hisilicon.com>,
        David Hildenbrand <david@redhat.com>,
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        <naoya.horiguchi@nec.com>,
        Xiongchun duan <duanxiongchun@bytedance.com>,
        linux-doc@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
        Linux Memory Management List <linux-mm@kvack.org>,
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On Mon, Jan 25, 2021 at 8:06 AM David Rientjes <rientjes@google.com> wrote:
>
>
> On Sun, 17 Jan 2021, Muchun Song wrote:
>
> > Because we reuse the first tail vmemmap page frame and remap it
> > with read-only, we cannot set the PageHWPosion on a tail page.
> > So we can use the head[4].private to record the real error page
> > index and set the raw error page PageHWPoison later.
> >
> > Signed-off-by: Muchun Song <songmuchun@bytedance.com>
> > Reviewed-by: Oscar Salvador <osalvador@suse.de>
>
> Acked-by: David Rientjes <rientjes@google.com>

Thanks.